42764023 has 4 divisors (see below), whose sum is σ = 43402360. Its totient is φ = 42125688.

The previous prime is 42764021. The next prime is 42764047. The reversal of 42764023 is 32046724.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42764023 - 2¹ = 42764021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42763982 and 42764000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42764021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319068 + ... + 319201.

It is an arithmetic number, because the mean of its divisors is an integer number (10850590).

Almost surely, 2^42764023 is an apocalyptic number.

42764023 is a deficient number, since it is larger than the sum of its proper divisors (638337).

42764023 is an equidigital number, since it uses as much as digits as its factorization.

42764023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638336.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 42764023 is about 6539.4206929972. The cubic root of 42764023 is about 349.6977608481.

The spelling of 42764023 in words is "forty-two million, seven hundred sixty-four thousand, twenty-three".